GLSA 201701-26: BIND: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	BIND: Denial of Service
Date:	01/11/2017
Bugs:	#598750
ID:	201701-26

Synopsis

A vulnerability in BIND might allow remote attackers to cause a Denial of Service condition.

Background

BIND (Berkeley Internet Name Domain) is a Name Server.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-dns/bind	< 9.10.4_p4	>= 9.10.4_p4	All supported architectures

Description

A defect in BIND’s handling of responses containing a DNAME answer can cause a resolver to exit after encountering an assertion failure in db.c or resolver.c.

Impact

A remote attacker could send a specially crafted DNS request to the BIND resolver possibly resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All BIND users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-dns/bind-9.10.4_p4"

References

CVE-2016-8864

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201701-26.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.